Question

Simplify the rational expression. State any restrictions on the variable.

Answer 1

\[\frac{ k^2-k-2 }{ k^2-4k-5}\]

Answer 2

\[\frac{ (k+1)(k-2) }{ (k+1)(k-5)}\]

Answer 3

\[\frac{ k-2 }{ k-5 }\]

Answer 4

That's the answer but i need to find the other part of the answer

Answer 5

\[\frac{ (k-2)(k+1) }{(k-5)(k+1)}\]
you can eliminate (k+1) but
\[k+1\neq0\]
\[k\neq-1\]
and the same to (k+5)
\[k-5\neq0\]
\[k\neq5\]

Answer 6

because you can not divide by zero. Is an uncertainty

Answer 7

So it's A?

Answer 8

yes

Answer 9

Thank you so much! :) Gave you a medal!

Answer 10

:D